Intake-manifold.



A. G. BENNETT.

INTAKE MANIFOLD.

APPLICATION FILED MAR.12, 191a.

1,10%,931. Patented July 21, 191:1

F'J. J6 4 be, I especially ASHLEY c. BENNETT,- oE M NNEAPonIs, minnnsora.

INTAKE-MANIFOLD.

Specification of Letters Patent; Patented J uly 21, 1914.

Application filed March 12, 1913. Serial No. 753,753.

To all whom it may concern:

Be it known that I, ASHLEY C. BENNETT, a citizen of the United States, residing at Minneapolis, in. the county of Hennepin and State; of Minnesota, have invented certain new anduseful Improvements in In- ..take-Manifolds, of which the following is a specification.

My invention relates to gas engines and particularly to an intake-manifold to be applied toa delivery pipe from a carbureter and conduct explosive mixture to a plurality of engine units.

It -;is the primary object of my invention to provide a manifold delivery pipe in which are formed ,a series of preferably flat-bottomedf'ducts. When burning heavy oils where a manifold intake is used theremay at slow speeds, a. considerable amount of condensation. If the manifold pipe is formed in the usual way, as a single enlarged passage' way, the condensed liquid will accumulate upon the walls and run to the bottom, where it-may gather to such an extent as 'finally to cause flooding and enuiling, of the engine or cause misfiring,

espeqlal-ly when-the'speed of. the engine s increased By my invention of dividing the carburetor passageways lnto a series of small channels leachpreferably provided with a vflat. bottom, I enormously increase the surface upon which the products of condensation wouldcoll'ect, and correspondingly increase the .areafrom which evapo I The result ofthis. is that where condensation occurs. the conration may take place.-

i densed liquid will be spread in extremely thinfilms .over and: will haveno opportunity to collectin; any considerable b0dy', '-so that when the engine speed isincreased the resulting increase inthe velocity'of the air passing through the i sage-ways 22ex-tending through the pipes passages will "breakup and -evaporate these thin' films; of condensation and carry the lsame'to-the explosion chambers in a, properly vapori ed c' nd'tion for complete" combu's-' :tion, f

It is'flso an 0'15 ect off my invention: to

provide a-manifoldjinwhich a throttling ac tion may' .t ake place for of opening to thesevferal intake ports,

and

yet J such ithat the --area of passage way through which-thegas flows will be constant throughoutfthe extent ofsuchpassage-ways however imuchithe. 'inanifold, may be throttledor in extent.

a large extent'of surface.

varying the extent The fullobjects and advantages of my invention will appear in connection with the detailed description thereof and are particularly pointed out in the claims. I,

In the drawings, illustrating the application of my invention in one form,-Figure 1. is" a section through a manifold employing the principles of my invention. v Fig. 2 is a section on line 2-2 of Fig. 1. ,Fig. 3 is a section on line 3-3 of Fig. 1. Figs. 4 and 5 are sectional views showing variationsin the arrangement of the passage-ways.

A pipe 10 leading from a carburetor, not

of any desired construction oomshown a port 11 with'a'c-hamber municates through 12' centrally positioned in respect to manifold pipes 13' and 14, it being understood that any desired number of such manifold pipes may communicate with the central chamber 12. "The manifold pipes 13 and 14 may connect by means of extensions l5with admission pipes 16 for thevarious engine units; explosive mixture which enters the chamber 12 from the carbureter pipe 10 may, therefore, flow, through pipes 13 and 14 and extensions 15 to the various admission pipes '16. The pipes 13 and 14may, as indicated in Figs. 2,3 and 4, be of rectangular cross section; or, as indicated in; Fig. 5, may

be cylindrical. In either event a son sof horizontal partitions-'17 are provided and corresponding vertical or transverse parti-' tions 18 within the pipes 13, 14:, etc., dividing'said pipes into amultiplicity of elongated flat bottomed ducts. These partitions may be formed directly by casting or may conveniently be formed as shown 1n Fig. 4 by bending sheet metal with; a series of loops 19 resting upon the bottom 20 ofthe pipe, or horizontal topportions of the .platejtielow; l fowever the partitions are formed, theylwill provide a seriesv of pas- 13-, "14, etc., and of uniform -cross sectional area from-thechaniber 12 to the admission valves: 16., These.; passage-ways will pref-- erablybe-provided with flatbottoins so that any liquid which condenses will be held" in thin, attenuated film's upon which the, gas

' A. feature of additional advantagein my structure isicomprised in itsadapt'ability for 0.

th'rottlingj the [manifold "without reducing,

flowing throughi-the same'may operate to I breakup and evaporate such films of liquid.

12 is extended upwardly into a valve casing 24 in which is positioned apiston valve operated by a rod 26 connected with control mechanism of common construction. When the valve 25 is pushed downwardly within the chamber 12, it will successively cut oil passages 22 within pipes 13 and 14. This will, of course, reduce the aggregate area of the manifold pipes through which explosive mixture may flow, but will reduce this area throughout the length of the manifold pipes so that the gas that actually is delivered to the admission pipe 16 will travel at theisame velocity whatever the extent of closure ef fected by valve 25. I

Ilhe operation of my device will readily be apparent, and its utility where heavy oils such as kerosene are employed in connection with the use of an intake manifold is obvious. The manifold may be constructed with very little additional cost over that entailed" in the usual construction of undivided pipes, and will very largely increase the cliiciency of such manifold when in use. It is to be noted that the valve 25 may be spring or gravity held, as indicated, so

that the same will be lifted by the suction pressure and will of course be lifted to a greater degree in proportion to the force of the suction pressure, only reaching the highest elevation in which all of the mouths of the ducts are exposed when the engine reaches such a high speed as'to induce practically the maximum suction pressure. That is, the valve 25 will by its own weight as constructed normally descend into the chamber 12 thereby closing all excepting the bottomtier of the passageways 22. When the engine is operated, the suction blast com-- ing through pipe'll under valve 25, will lift said valve to a greater or less extent in accordance with the force of this suction pressure proportionately opening a greater or less number of the passages 22.

I claim:

1. An'intake manifold comprising a casing formed with a central chamber, means for introducing explosive mixture into said chamber, a plurality of manifold pipes leading from said'central chamber, and means dividing the space within said pipes throughout their lengths into a multiplicity of ducts or passageways.

- 2; An intake manifold comprising a casing formed, with a central; chamber, means for introducing explosive mixture into said chamber, a plurality of manifold pipesleading from said central chamber, and means dividing the space within said pipes throughout their lengths into a multiplicity of flat-bottomed ducts or, passage-ways.

. 3. An intake manifold comprising a cas-' ing formed with a centralchamber, means for introducing exploslve. mixture into saidchamber, a plurality of manifold pipes lead- 4. An intake manifold comprising a casing formed with a central chamber, means for introducing explosive mixture into said chamber, a plurality of manifold pipes leading from said central chamber, and two sets of partitions disposed at rightangle's to one another within the; manifold pipes dividing the space within said pipes throughout the length of the same into a multiplicity of rectangular ducts or passage-ways.

5. An intake manifold comprising a casing formed with a central chamber, means for introducing explosive mixture into said chamber, a plurality of-manifold pipes leading from said central chamber, two sets of partitions disposed at right angles to one another within the manifold pipes dividing the space within said pipes throughout the length of the same into a multiplicity of rectangular ducts or passage-ways, sald ducts or passage-ways for each manifold pipe having the mouths opening into the central chamber in common planes, and a valve operative in said chamber for closing said mouths'as desired.

, 6. An intake manifold comprising a casing formed with a central chamber, means for introducing explosive mixture into said,

chamber, a plurality of manifold pipes leading from said chamber, sets of partitions in the manifold pipes dividing the space within said pipes throughout the length of the same into a multiplicity of ducts or passageways, said ducts or passageways for each manifold pipe having the mouths opening into the central chamber in common planes, and a valve operative in said chamber, and tending to close the mouths of said ducts but operated under suction pressure to open a larger or smaller area of said months in proportion to the pressure induced by theoperation of the engine.

7. An intake manifold comprising a casing formed with a central chamber, a carbureter pipe opening into said chamber, a. plurality of manifold pipes leading from said chamber, means dividing each of and manifold pipes into a multiplicity of ducts .or passageways, said ducts or passageways slidable in said chamber and hureter delivery pipe opening iIito said In testimony whereof I aflix my signature v ghamhfr, ah series of igdependent dducts in presence of two witnesses.

orme wit in said mani old ipe an hav 1' v ing their mouths opening into e'said cham- ASHLEY BLNNE 1 5; her, and a valve operative in said chamber Witnesses: for closinfisa greater or smaller number of H.A, BOWMAN,

,said mout as desired. 7 F. A. Wm'rEtEY; 

